Binning 2:   Similar to several previous work [1]}, [2]}, [3]}, [4]}, where events are stacked/integrated over a time window, we allow each event frame to have more than three values. However, since the “tanh” function in Equation (REF ) only outputs values between -1 and 1, we modify our event sensing model to have a summation operation over several sub-event frames. Mathematically, \({E}_{b2} = \sum _t{{E}_t}\) .
